Loom



Dec. 26, 1939.. s. T. PUGH 2,185,063

LOOM

Filed March 11, 1959 Patented Dec. 26, 1939 PATENT omen aisaoss LOOM Pugh, Radford,

4. per cent to Wyatt T.

Va., asslgnor of fifty Burnette, Altavista, Va.

' Application March 11, 1939. Serial No. 261,330

, 3 Claims.

This invention relates to looms and more particularly to a 100m of the box type which is known in the trade as a Draper loom. 1

An object of this invention is to provide a 5 means in combination with the ratchet wheel of the take-up mechanism whereby the loom may be stopped at any time without causing a loss ofone or more weft threads.

At the'present time in the operation of looms, the ratchet wheel is progressively rotatedby a driving pawl and this ratchet wheel is held against undue rotation in the advance movement thereof by means of a holding pawl. This holding pawl, however, does not eliminate the loss of one or more threads through the warp when the loom is started up again, thus causing a deterioration in the quality of the material-produced by the loom.

It is therefore another object of this invention a to provide a means connected to the holding pawl whereby the holding pawl is released from the pick wheel simultaneously with the stopping of the loom so as to prevent the loss of one or more weft threads through the warp.

A still further object of this invention is to provide an attachment of this kind which is operatively connected with the starting lever so that the attachment may be shifted out of engagement with the ratchet whel simultaneously with so the stopping of the loom by operation of the shipper lever.

A further object an attachment of this kind which is operatively connected with the shipper lever for simulas taneous'operation therewith and which includes means whereby the attachment may be manually shifted out of engagement with-the ratchet wheel independent of the position of the shipper lever.

To the above objects and to' others which may 0 hereinafterappear, the invention consists of the novel construction, combination and arrangement of parts aswill to and illustrated in the accompanying drawing wherein is shown an embodiment of .the inven- 45 tion, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

ment of this invention mounted on the take-19 mechanism of a loom, the fragmentary side elevation,

Figure 2 isa detail frcnt'elevationof the atof this invention is to provide 7 be more specifically referred loom-being shown in tachment showing the connection of the attach ment with the loom starting and stopping means, and

the attachment removed from the loom.

Referring to the drawing, the numeral l0 des- Ignates generally the frame of a loom which is positioned at the end of the loom carrying the take-up mechanism. The frame 10 is provided with a shaft I lon which a ratchet wheel or pick wheel I2 is fixedly secured. A starting lever it which is provided with a depending lower portion I5 is secured to a shaft l3 which is connected to the starting-mechanism similar to that disclosed in Patent 1,807,726. The starting mechanism associated with the starting lever ll and the remaining loom structure associated with the ratchet wheel l2 of the pick take-up roll or mechanism is well known and it is believed that a further description of this structure is unnecessary. The ratchet wheel I2 is progressively rotated by means of a driving pawl l6 which is carried by! one end of a rock lever ll. The rock lever II has an operating link 18 connected to one end thereof which-is connected at the other end to the usual operating structure similar to that embodied in the above mentioned. patent. The pawl I6 is provided with a bill or blade is and the blade I9 is held in engagement with the teeth 20 of the wheel l2 by means of a spring 2|. 7 l v In order to provide a means whereby the rotation of the ratchet wheel 12 may be controlled, 1 have provided a holding pawl generally desig- 'nated as 22. The holding pawl 22 comprises a lever 23 provided at one end thereof with a boss 2! which is rockably mounted on a pivot 25 carried by the frame Ill. The lever 23 at its forward endis provided with a head 28 extending upwardly therefrom provided with a forwardly projecting extension 21. The head 28 is also provided with a key-'way 28 at the inner end of the lug 21 within which a key 23 carried by a blade 33 is adapted to engage. The blade 30 is secured to the forward side of the head 23 by means of a bolt or screw 3|. A bracing web 32 is formed integral with the upper side of the lever 23 and extends between the boss 24 and the head 26. An

and forwardly projecting arcuate handle 33 isformed integral with the upper edge of the web 32 and provides a means whereby the holding pawl 22 may be vertically rockedso as to move the pawl 22 upwardly to a releasedposition independent of the starting lever ll.

Thelowerportion llofthelever llhasoneend Figure 3 is an enlarged detail side elevationof of a link 45 connected thereto and the opposite end of the link 45 is mounted on a pivot 31 engaging the lower end of a rock arm 46 associated with the loom mechanism. The lever l4 together with the link 45 and the arm 46 now form a portion of the present parts of the loom mechanism and in order to provide a means whereby the pawl 22 may be swung to an inoperative position upon rocking of the lever I 4 to a released position I have provided a connecting link or bar 34 provided with an opening 36 in the upper end thereof which engages the pivot or stud 31. The bar 34 is held on the stud 31 by means of a cotter pin 38 or other suitable holding means.

The bar 34 is provided with an intermediate and forwardly extending portion 39, an inwardly oflset portion 35 and a relatively long outwardly ofiset portion 40. The offset portion lllis provided with an elongated slot 4! within which a pin or stud 42 loosely engages. A cotter pin or locking member 43 is mounted on the stud 42 so as to hold the lower end of the bar 34 on the stud 42. The slot 4| extends longitudinally of the bar or link 34-from a point closely adjacent the lower end thereof for a distance substantiallygreater than one-half the length of the offset portion 40. The pawl 22 is constantly urged to a ratchet engaging position by means of a spring 44 which at one end engages the stud 42 and at the other end is secured to a suitable part of the frame l0.

In the use of this attachment the pawl 22 is operatively connected with the lower end of the arm 46 by means of the connecting ink 34 and when the starting lever I4 is in an operative position, the pawl 22' will be in the position shown in full lines in Figure 1. The bill or blade 30 of the pawl 22 will ride over the teeth 30 of the ratchet 82 during the progressive rotation of the wheel l2 by means of the'driving pawl 15. However, when the lever It is shifted to a stopping position, or to the position shown in dotted lines, in Figure 1, the connecting link 34 will simultaneously raise the holding pawl 22 to a disengaged position. In the event at any time during the operation of the loom it is desired to manually shift the holding pawl 22 to a disengaged position, with the lever ld in an operating position, this may be readily effected by grasping the handle 33 and raising the pawl 22 with the pivot 62 sliding upwardly in the slot M.

An attachment constructed according to an embodiment of this invention has been placed in actual use and operation being combined with the present structure of a loom and has been found to entirely eliminate the loss of threads through the warp caused by stopping of the loom. With a device of this character, the loom may be stopped at any point relative to the material being woven by the loom and may also be stopped as many times as may be considered necessary or desirable without in any instance causing the loss of a weft thread through the warp. It will, therefore, be seen that with a loom having a device of this kind, the material on the loom will no longer a have the quality thereof reduced to a second as is at present the case by reason of the stopping of the loom for any particular cause.

This attachment may be connected to the present parts of the loom without changing the construction of the parts, it only being necessary to provide the holding pawl at present in use with a pivot member and connect this pivot member with a second pivot member secured to the starting lever by means of the link 34.

What I claim is:

1. In a loom having a take-up mechanism including a ratchet wheel, a feed pawl and a loom starting and stoppingmeans, a holding pawl engageable with said wheel, a link pivotally secured at one end to said means and having an elongated slot adjacent the other end, a part fixed to said holding pawl loosely engaging in saidslot, yieldable means yieldably holding said part at one end of said slot, and a handle carried by said holding pawl permitting manual movement of said holding pawl independent-of said means.

2. A releasing attachment for use in connection with looms of that type including starting and stopping mechanism and a take-up roll provided with a ratchet wheel, said attachment comprisinga depending link adapted to be pivotally supported at its upper end from and bodily shiftable by said mechanism, said link being formed with a slot lengthwise thereof, a holding pawl opposing the lower portion of said slot, pivotally mounted at one end and having its other end normally engaging in said wheel, spring controlled means fixed to said pawl, extending through said slot andnormally tending to maintain the said-other end of the pawl'in engagement with said wheel, said means coacting with the lower wall of said slot for moving the pawl from its engagement with said wheel on the moving of said mechanism to stop the operation of the loom, and said pawl provided with means for shifting it clear of said wheel independently of said mechanism.

3. A releasing attachment for use in connection with looms of that type including a starting and stopping-mechanism and a take-up roll provided with a ratchet wheel, said attachment comprising a depending link adapted to be pivotally supported at its upper end from and bodily shiftable by said mechanism, said link including an off-set portion formed lengthwise thereof with a slot, a holding pawl opposing the lower portion of the slot, pivotally mounted at one end and having its other end for normally engaging in said wheel. a spring controlled means fixed to and extending laterally from the pawl, said means passing through said slot and normally tending to maintain said pawl in engagement with said wheel, said means coacting with the lower end'wall of the slot for moving the pawl from its engagement pendently of said mechanism.

SAMUEL 'r. PUGH. 

